{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER35HDTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER35HDTR","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER35HDTR","factsUrl":"https://icboms.com/api/mcp/products/VIPER35HDTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPER35HDTR offline flyback switcher IC, 22 W output power, 800 V breakdown voltage, 225 kHz switching frequency, 16-SOIC package, isolated topology with integrated power MOSFET.","salesMarkdown":"## What this offline flyback switcher brings to a 22 W supply The VIPER35HDTR is an offline flyback switcher from STMicroelectronics that integrates the controller and a 800 V avalanche-rugged power MOSFET in a single 16-SOIC package. Switching at 225 kHz lets you shrink the flyback transformer core compared to a 65 kHz design, which directly reduces the overall converter footprint and bill-of-materials height. The supply voltage range of 8.5 V to 23.5 V on Vcc gives flexibility for both self-supplied and externally biased configurations, while the 14 V startup threshold ensures clean turn-on even with a slow-rising bulk capacitor. ## Protection set and thermal headroom On-chip fault protection covers current limiting, over-temperature, over-voltage, and short-circuit conditions — meaning you can often omit external sense resistors or a separate OVP clamp, simplifying the BOM. ## Package, mounting, and sourcing posture It is supplied on tape and reel (cut tape available) in the 16-SOIC (0.154\", 3.90 mm width) body — a hand-solderable footprint that also suits reflow assembly. Because this is an active, single-sourced ST part, the procurement path is through authorized distribution.","metaTitle":"VIPER35HDTR STMicroelectronics Offline Flyback Switcher 22W","metaDescription":"VIPER35HDTR STMicroelectronics offline flyback switcher IC. 22 W output power, 800 V breakdown, 225 kHz switching, 16-SOIC package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Topology":"Flyback","Mounting Type":"Surface Mount","Power (Watts)":"22 W","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Fault Protection":"Current Limiting, Over Temperature, Over Voltage, Short Circuit","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"14 V","Base Product Number":"VIPER35","Voltage - Breakdown":"800V","Frequency - Switching":"225kHz","Operating Temperature":"-40°C ~ 150°C (TJ)","Supplier Device Package":"16-SO","Voltage - Supply (Vcc/Vdd)":"8.5V ~ 23.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6500","priceTiers":[{"qty":1,"price":"$1.65000","currency":"USD"},{"qty":10,"price":"$1.47100","currency":"USD"},{"qty":25,"price":"$1.39640","currency":"USD"},{"qty":100,"price":"$1.14710","currency":"USD"},{"qty":250,"price":"$1.07228","currency":"USD"},{"qty":500,"price":"$0.94760","currency":"USD"},{"qty":1000,"price":"$0.74811","currency":"USD"},{"qty":2500,"price":"$0.69823","currency":"USD"},{"qty":5000,"price":"$0.66332","currency":"USD"},{"qty":12500,"price":"$0.63838","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cb6e35b910edac381df5b08dea584911.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER35HDTR/alternatives.json"},"ai":{"faq":[{"question":"What is the output power range of VIPER35HDTR?","answer":"The datasheet specifies 22 W maximum output power in a flyback topology. Actual achievable power depends on the input voltage range, transformer design, and thermal management of the 16-SOIC package."},{"question":"What protection features are built into VIPER35HDTR?","answer":"It includes current limiting, over-temperature, over-voltage, and short-circuit protection — all integrated, so you can often eliminate external protection components."},{"question":"Where can I find the datasheet and pinout for VIPER35HDTR?","answer":"The datasheet is available from STMicroelectronics under the base product number VIPER35. The 16-SOIC pinout is documented in the official datasheet — we recommend downloading it directly from ST's website for the most current revision."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER35HDTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER35HDTR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}